#!/bin/bash
#
set -ex

echo "Version : DI 27. Feb 22:52:41 CET 2017"

WEBADDRESS="https://github.com/simono41/SpectreOS.git"
repo="SpectreOS"
user="user1"
version="${2}"

[[ -z "${version}" ]] && version="voll"

if [[ $EUID -ne 0 ]]; then
    echo "This script must be run as root" 1>&2
    sudo "$0" "$1" "$2" "$3" "$4" "$5" "$6" "$7" "$8" "$9" 2>&1 | tee /home/user1/install.log
    exit 0
fi
echo "Logged in as root"

function minimalinstallation() {
    pacstrap -c -d -G -M ${mountpoint} $(cat /opt/${repo}/packages_voll.txt)
}

function gitclone() {
    if [ -d "/opt/${repo}" ]; then
        echo "${repo} already exists!!!"
        cd /opt/${repo}
        git pull
    else
        git clone ${WEBADDRESS} /opt/${repo}
    fi
    cd /
}

function secureumount() {
    if [ "${dateisystem}" == "btrfs" ]; then
        if cat /proc/mounts | grep ${mountpoint} > /dev/null; then
            umount ${mountpoint}/boot
            btrfs filesystem df ${mountpoint}
            echo "umount!!!"
            umount ${mountpoint}/home
            umount ${mountpoint}/opt
            umount ${mountpoint}/var/cache/pacman/pkg
            umount ${mountpoint}/var/lib
            # custom-mounts
            for wort in ${mountsnaps}
            do
                umount ${mountpoint}${wort}
            done
            umount ${mountpoint}
            umount /mnt/btrfs-root
            #umount -R /mnt
        fi
    elif [ "${dateisystem}" == "ext4" ]; then

        if cat /proc/mounts | grep ${mountpoint}/boot > /dev/null; then
            umount ${mountpoint}/boot
        fi

        if cat /proc/mounts | grep ${mountpoint} > /dev/null; then
            umount ${mountpoint}
        fi
    fi

    if fdisk -l | grep /dev/mapper/luks0 > /dev/null; then
        read -p "Should /dev/mapper/luks0 be removed? [Y/n] : " cryptremove
        if [ "${cryptremove}" != "n" ]; then
            cryptsetup remove /dev/mapper/luks0
        fi
    fi

    if cat /proc/mounts | grep ${device}1 > /dev/null; then
        umount ${device}1
    fi

    if [ -n "${usbkeydevice}" ]; then
        if cat /proc/mounts | grep ${usbkeydevice} > /dev/null; then
            umount ${usbkeydevice}
        fi
    fi

}

function formatencrypt() {
    if [ "${verschluesselung}" == "y" ]; then
        echo "Please write big YES"
        cryptsetup -c aes-xts-plain64 -y -s 512 luksFormat ${device}${rootpartitionnummer}
        mountencrypt
    fi

}

function mountencrypt() {
    cryptsetup luksOpen ${device}${rootpartitionnummer} luks0
}

function partionierenmitswap() {
    wipefs -a -f ${device}
    sgdisk -o ${device}
    sgdisk -a 2048 -n 1::+1024K -c 1:"BIOS Boot Partition" -t 1:ef02 ${device}
    sgdisk -a 2048 -n 2::+1G -c 2:"EFI Boot Partition" -t 2:ef00 ${device}
    sgdisk -a 2048 -n 3::+8G -c 3:"Linux swap" -t 3:8200 ${device}
    sgdisk -a 2048 -n 4:: -c 4:"Linux filesystem" -t 4:8300 ${device}
    formatencrypt

}

function partionierenohneswap() {
    wipefs -a -f ${device}
    sgdisk -o ${device}
    sgdisk -a 2048 -n 1::+1024K -c 1:"BIOS Boot Partition" -t 1:ef02 ${device}
    sgdisk -a 2048 -n 2::+1G -c 2:"EFI Boot Partition" -t 2:ef00 ${device}
    sgdisk -a 2048 -n 3:: -c 3:"Linux filesystem" -t 3:8300 ${device}
    formatencrypt

}

function usbkeyinstallation() {
    mkdir -p /mnt/usb-stick
    mount ${usbkeydevice} /mnt/usb-stick
    dd if=/dev/urandom of=/mnt/usb-stick/archkey bs=512 count=4
    cryptsetup luksAddKey ${device}${rootpartitionnummer} /mnt/usb-stick/archkey

}

function usbsecret() {

    cp /opt/${repo}/install/usbsecret ${mountpoint}/usr/lib/initcpio/install/usbsecret
    cp /opt/${repo}/hooks/usbsecret ${mountpoint}/root/usbsecret

    # hooks
    #cp install/usbsecret ${mountpoint}/usr/lib/initcpio/install/usbsecret
    #cp hooks/usbsecret ${mountpoint}/usr/lib/initcpio/hooks/usbsecret

    sed "s|%USB_UUID%|${usbsecretdeviceuuid}|g;" ${mountpoint}/root/usbsecret > ${mountpoint}/usr/lib/initcpio/hooks/usbsecret

}

function cron() {
    echo "cron-job snapshot"
    mkdir -p ${mountpoint}/var/spool/cron/
    echo -n "0 18 * * * /usr/bin/snapshot make ROOT home opt var/cache/pacman/pkg " > ${mountpoint}/var/spool/cron/root

    # custom-mounts
    for wort in ${mountsnaps}
    do
        echo -n "${wort#/*} " >> ${mountpoint}/var/spool/cron/root
    done
    echo "" >> ${mountpoint}/var/spool/cron/root

    if [ "${update}" != "n" ]; then
        cp /opt/${repo}/snapshot.sh ${mountpoint}/usr/bin/snapshot
        chmod 755 ${mountpoint}/usr/bin/snapshot
    fi
}

function makeswapfile() {
    #swapfile
    fallocate -l 4G ${mountpoint}/swapfile
    chmod 600 ${mountpoint}/swapfile
    mkswap ${mountpoint}/swapfile
    echo "/swapfile none swap defaults 0 0" >> ${mountpoint}/etc/fstab
}

function makebtrfsswapfile() {

    /opt/${repo}/btrfs-swapon ${mountpoint}/usr/bin/btrfs-swapon
    /opt/${repo}/btrfs-swapoff ${mountpoint}/usr/bin/btrfs-swapoff
    /opt/${repo}/btrfs-swapon.service ${mountpoint}/root/btrfs-swapon.service

    chmod +x ${mountpoint}/usr/bin/btrfs-swapon
    chmod +x ${mountpoint}/usr/bin/btrfs-swapoff

    sed "s|%swapfilespeicher%|${swapfilespeicher}|g;" ${mountpoint}/root/btrfs-swapon.service > ${mountpoint}/etc/systemd/system/btrfs-swapon.service

    arch-chroot ${mountpoint} systemctl enable btrfs-swapon

}

function removeinstaller {
    echo ""
    if [ -f ${mountpoint}/usr/share/applications/arch-install.desktop ]
    then
        rm ${mountpoint}/usr/share/applications/arch-install.desktop
    fi
    echo ""
    if [ -f ${mountpoint}/root/Schreibtisch/arch-install.desktop ]
    then
        rm ${mountpoint}/root/Schreibtisch/arch-install.desktop
    fi
    echo ""
    if [ -f ${mountpoint}/home/${user}/Schreibtisch/arch-install.desktop ]
    then
        rm ${mountpoint}/home/${user}/Schreibtisch/arch-install.desktop
    fi
    echo ""
    if [ -f ${mountpoint}/root/Desktop/arch-install.desktop ]
    then
        rm ${mountpoint}/root/Desktop/arch-install.desktop
    fi
    echo ""
    if [ -f ${mountpoint}/home/${user}/Desktop/arch-install.desktop ]
    then
        rm ${mountpoint}/home/${user}/Desktop/arch-install.desktop
    fi
    echo ""
}

function installation {

    #boot
    echo "format"
    if [ "${name}" != "noinstall" ]; then
        mkfs.vfat -F 32 ${device}${efipartitionnummer}
    fi

    #root
    if [ "${dateisystem}" == "btrfs" ]; then
        #mkfs.btrfs -f -L p_arch ${device}2
        if [ "${name}" != "noinstall" ]; then
            btrfsformat #btrfs
        fi
        subvolume #btrfs

    elif [ "${dateisystem}" == "ext4" ]; then
        echo "confirm with j"
        if [ "${verschluesselung}" == "y" ]; then
            if [ "${name}" != "noinstall" ]; then
                mkfs.ext4 -L p_arch ${deviceluks} #ext4
            fi
            mount ${deviceluks} ${mountpoint}
        else
            if [ "${name}" != "noinstall" ]; then
                mkfs.ext4 -L p_arch ${device}${rootpartitionnummer} #ext4
            fi
            mount ${device}${rootpartitionnummer} ${mountpoint}
        fi
        mkdir -p ${mountpoint}/boot
        mount ${device}${efipartitionnummer} ${mountpoint}/boot
    fi

    #swap
    if [ "${name}" != "noinstall" ]; then
        if [ "${swap}" != "n" ]; then
            mkswap -L p_swap ${device}${swappartitionnummer}
        fi
    fi

    #installation
    if [ "${name}" != "noinstall" ]; then
        if [ "${offline}" != "n" ]
        then
            if [ -f /run/archiso/bootmnt/arch/$(uname -m)/airootfs.sfs ]; then
                echo "It is not a copytoram system."
                unsquashfs -f -d ${mountpoint} /run/archiso/bootmnt/arch/$(uname -m)/airootfs.sfs
            elif [ -f /run/archiso/copytoram/airootfs.sfs ]; then
                echo "It is a copytoram system."
                unsquashfs -f -d ${mountpoint} /run/archiso/copytoram/airootfs.sfs
            else
                read -p "Where is the airootfs.sfs? Please specify the complete path or choose the online installation? [/airootfs.sfs/online] : " installationfehler
                if [ "${installationfehler}" == "online" ]; then
                    minimalinstallation
                else
                    unsquashfs -f -d ${mountpoint} ${installationfehler}
                fi
            fi
        else
            minimalinstallation
        fi
    fi

    # module and hooks
    parameter="base udev "
    if [ "${swap}" != "n" ]; then
        parameter="${parameter}resume "
    fi
    if [ "${verschluesselung}" == "y" ]; then
        parameter="${parameter}encrypt "
    fi
    parameter="${parameter}block filesystems keyboard "
    if [ "${verschluesselung}" == "y" ]; then
        echo "btrfs-hook is skipped!"
    else
        if [ "${dateisystem}" == "btrfs" ]; then
            parameter="${parameter}btrfs "
        fi
    fi

    if [ "${usbsecret}" == "y" ]; then
        parameter="${parameter}usbsecret "
    fi

    if [ "${version}" != "libre" ]; then
        if [ "${verschluesselung}" == "y" ]; then
            parameter="${parameter}plymouth-encrypt "
        else
            parameter="${parameter}plymouth "
        fi
    fi


    echo ""
    if [ "${version}" == "libre" ]; then
        echo "MODULES=\"i915 radeon nouveau ata_generic ata_piix nls_cp437 vfat ext4 btrfs\"" > ${mountpoint}/etc/mkinitcpio.conf
        echo "HOOKS=\"${parameter}\"" >> ${mountpoint}/etc/mkinitcpio.conf
        echo "COMPRESSION=\"lz4\"" >> ${mountpoint}/etc/mkinitcpio.conf
        echo "FILES=\"/etc/modprobe.d/blacklist-floppy.conf /etc/modprobe.d/blacklist_nouveau.conf\"" >> ${mountpoint}/etc/mkinitcpio.conf

    else
        #echo "MODULES=\"i915 radeon ata_generic ata_piix nls_cp437 vfat ext4 btrfs\"" > ${mountpoint}/etc/mkinitcpio.conf
        #echo "HOOKS=\"${parameter}\"" >> ${mountpoint}/etc/mkinitcpio.conf
        #echo "COMPRESSION=\"lz4\"" >> ${mountpoint}/etc/mkinitcpio.conf
        #echo "FILES=\"/etc/modprobe.d/blacklist-floppy.conf\"" >> ${mountpoint}/etc/mkinitcpio.conf

        echo "MODULES=\"nvidia nvidia_modeset nvidia_uvm nvidia_drm i915 radeon ata_generic ata_piix nls_cp437 vfat ext4 btrfs\"" > ${mountpoint}/etc/mkinitcpio.conf
        echo "HOOKS=\"${parameter}\"" >> ${mountpoint}/etc/mkinitcpio.conf
        echo "COMPRESSION=\"lz4\"" >> ${mountpoint}/etc/mkinitcpio.conf
        echo "FILES=\"/etc/modprobe.d/blacklist-floppy.conf /etc/modprobe.d/blacklist_nouveau.conf\"" >> ${mountpoint}/etc/mkinitcpio.conf

    fi
    echo ""
    echo "blacklist floppy" > ${mountpoint}/etc/modprobe.d/blacklist-floppy.conf
    echo "blacklist nouveau" > ${mountpoint}/etc/modprobe.d/blacklist_nouveau.conf
    echo "tmpfs /tmp tmpfs defaults 0 0" > ${mountpoint}/etc/fstab
    echo "tmpfs /dev/shm tmpfs defaults 0 0" >> ${mountpoint}/etc/fstab

    #fstab
    rootbind=$(blkid -s PARTUUID -o value ${device}${rootpartitionnummer})

    #genfstab -Up ${mountpoint} >> ${mountpoint}/etc/fstab

    if [ "${dateisystem}" == "btrfs" ]; then
        btrfsfstab #btrfs

        mkdir -p ${mountpoint}/run/btrfs-root
        if [ "${verschluesselung}" == "y" ]; then
            echo "${deviceluks} /run/btrfs-root/ btrfs defaults 0 0" >> ${mountpoint}/etc/fstab #btrfs
        else
            echo "PARTUUID=${rootbind} /run/btrfs-root/ btrfs defaults 0 0" >> ${mountpoint}/etc/fstab #btrfs
        fi
        #grep -v "/var/lib" < ${mountpoint}/etc/fstab > fstab.neu; mv fstab.neu ${mountpoint}/etc/fstab

        echo "/run/btrfs-root/__current/ROOT/var/lib /var/lib none bind 0 0" >> ${mountpoint}/etc/fstab #btrfs

        cron

    elif [ "${dateisystem}" == "ext4" ]; then
        if [ "${verschluesselung}" == "y" ]; then
            echo "${deviceluks} / ext4 rw,defaults,noatime,nodiratime,discard 0 0" >> ${mountpoint}/etc/fstab
        else
            echo "PARTUUID=${rootbind} / ext4 rw,defaults,noatime,nodiratime,discard 0 0" >> ${mountpoint}/etc/fstab
        fi
    fi


    bootbind=$(blkid -s PARTUUID -o value ${device}${efipartitionnummer})

    echo -e "PARTUUID=${bootbind} /boot vfat rw,relatime 0 2" >> ${mountpoint}/etc/fstab


    if [ "${swap}" != "n" ]; then
        if [ "${verschluesselung}" == "y" ]; then
            swappartition=$(blkid -s PARTUUID -o value ${device}${swappartitionnummer})
            echo "swap PARTUUID=${swappartition} /dev/urandom swap,cipher=aes-cbc-essiv:sha256,size=256" > ${mountpoint}/etc/crypttab
            echo "/dev/mapper/swap none swap defaults 0 0" >> ${mountpoint}/etc/fstab
        else
            swappartition=$(blkid -s PARTUUID -o value ${device}${swappartitionnummer})
            echo "PARTUUID=${swappartition} none swap defaults 0 0" >> ${mountpoint}/etc/fstab
        fi
    fi

    #makeswapfile+fstab
    if [ "${name}" != "noinstall" ]; then
        if [ "${swapfile}" == "y" ]; then
            if [ "${dateisystem}" == "btrfs" ]; then
                makebtrfsswapfile
            elif [ "${dateisystem}" == "ext4" ]; then
                makeswapfile
            fi
        fi
    fi

    #hostname
    echo "${name}´s_PC-${version}" > ${mountpoint}/etc/hostname

    if [ "${name}" != "noinstall" ]; then
        if [ "${usbsecret}" == "y" ]; then
            usbsecret
        fi
    fi

    if [ "${name}" != "noinstall" ]; then
        if [ "${usbkey}" == "y" ]; then
            usbkeyinstallation
        fi
    fi












    #sie könne hier ihre scripte die bei der installation ausgeführt werden sollen hinzufügen :D






}

function grubinstall() {
    if [ "${verschluesselung}" == "y" ]; then
        if [ "${boot}" == "grub" ]; then
            tobootdevice=$(blkid -s PARTUUID -o value ${device}${rootpartitionnummer})
            if [ "${swap}" != "n" ]; then
                swappartition=$(blkid -s PARTUUID -o value ${device}${swappartitionnummer})
                if [ "${usbkey}" == "y" ]; then
                    sed -i 's/GRUB_CMDLINE_LINUX=.*$/GRUB_CMDLINE_LINUX="cryptdevice=PARTUUID='$tobootdevice':luks0 resume=PARTUUID='$swappartition' cryptkey=UUID='$usbkeyuuid':'$usbkeydateisystem':\/archkey nvidia-drm.modeset=1 splash"/' ${mountpoint}/etc/default/grub
                else
                    sed -i 's/GRUB_CMDLINE_LINUX=.*$/GRUB_CMDLINE_LINUX="cryptdevice=PARTUUID='$tobootdevice':luks0 resume=PARTUUID='$swappartition' nvidia-drm.modeset=1 splash"/' ${mountpoint}/etc/default/grub
                fi
            else
                if [ "${usbkey}" == "y" ]; then
                    sed -i 's/GRUB_CMDLINE_LINUX=.*$/GRUB_CMDLINE_LINUX="cryptdevice=PARTUUID='$tobootdevice':luks0 cryptkey=UUID='$usbkeyuuid':'$usbkeydateisystem':\/archkey nvidia-drm.modeset=1 splash"/' ${mountpoint}/etc/default/grub
                else
                    sed -i 's/GRUB_CMDLINE_LINUX=.*$/GRUB_CMDLINE_LINUX="cryptdevice=PARTUUID='$tobootdevice':luks0 nvidia-drm.modeset=1 splash"/' ${mountpoint}/etc/default/grub
                fi
            fi
            echo "GRUB_ENABLE_CRYPTODISK=y" >> ${mountpoint}/etc/default/grub
        fi
    else
        if [ "${boot}" == "grub" ]; then
            tobootdevice=$(blkid -s PARTUUID -o value ${device}${rootpartitionnummer})
            if [ "${swap}" != "n" ]; then
                swappartition=$(blkid -s PARTUUID -o value ${device}${swappartitionnummer})
                sed -i 's/GRUB_CMDLINE_LINUX=.*$/GRUB_CMDLINE_LINUX="resume=PARTUUID='$swappartition' nvidia-drm.modeset=1 splash"/' ${mountpoint}/etc/default/grub
            fi
        fi
    fi
}

function btrfsformat() {
    if [ "$raid" == "raid0" ]; then
        if [ "${verschluesselung}" == "y" ]; then
            mkfs.btrfs -f -m raid10 -d raid10 ${deviceluks} ${device1}
        else
            mkfs.btrfs -f -m raid0 -d raid0 ${device}${rootpartitionnummer} ${device1}
        fi
    elif [ "$raid" == "raid1" ]; then
        if [ "${verschluesselung}" == "y" ]; then
            mkfs.btrfs -f -m raid10 -d raid10 ${deviceluks} ${device1}
        else
            mkfs.btrfs -f -m raid1 -d raid1 ${device}${rootpartitionnummer} ${device1}
        fi
    elif [ "$raid" == "raid10" ]; then
        if [ "${verschluesselung}" == "y" ]; then
            mkfs.btrfs -f -m raid10 -d raid10 ${deviceluks} ${device1}
        else
            mkfs.btrfs -f -m raid10 -d raid10 ${device}${rootpartitionnummer} ${device1}
        fi
    else
        if [ "${verschluesselung}" == "y" ]; then
            mkfs.btrfs -f -m single ${deviceluks}
        else
            mkfs.btrfs -f -m single ${device}${rootpartitionnummer}
        fi
    fi
    btrfs filesystem show

}

function btrfsfstab() {

    rootbind=$(blkid -s PARTUUID -o value ${device}${rootpartitionnummer})

    if [ "${verschluesselung}" == "y" ]; then


        echo -e "${deviceluks} / btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/ROOT 0 0" >> ${mountpoint}/etc/fstab

        echo -e "${deviceluks} /home btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/home 0 0" >> ${mountpoint}/etc/fstab
        echo -e "${deviceluks} /opt btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/opt 0 0" >> ${mountpoint}/etc/fstab
        echo -e "${deviceluks} /var/cache/pacman/pkg btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/var/cache/pacman/pkg 0 0" >> ${mountpoint}/etc/fstab

        # custom-mounts
        for wort in ${mountsnaps}
        do
            echo -e "${deviceluks} ${wort} btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current${wort} 0 0" >> ${mountpoint}/etc/fstab
        done


    else

        echo -e "PARTUUID=${rootbind} / btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/ROOT 0 0" >> ${mountpoint}/etc/fstab

        echo -e "PARTUUID=${rootbind} /home btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/home 0 0" >> ${mountpoint}/etc/fstab
        echo -e "PARTUUID=${rootbind} /opt btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/opt 0 0" >> ${mountpoint}/etc/fstab
        echo -e "PARTUUID=${rootbind} /var/cache/pacman/pkg btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/var/cache/pacman/pkg 0 0" >> ${mountpoint}/etc/fstab

        # custom-mounts
        for wort in ${mountsnaps}
        do
            echo -e "PARTUUID=${rootbind} ${wort} btrfs rw,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current${wort} 0 0" >> ${mountpoint}/etc/fstab
        done


    fi
}

function btrfsmount() {
    #[[ -z "${device}" ]] && device=${2}

    if [ "${1}" == "1" ] || [ "${1}" == "" ]; then
        if [ "${verschluesselung}" == "y" ]; then
            mkdir -p /mnt/btrfs-root
            mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo ${deviceluks} /mnt/btrfs-root
        else
            mkdir -p /mnt/btrfs-root
            mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo ${device}${rootpartitionnummer} /mnt/btrfs-root
        fi
    fi
    if [ "${1}" == "2" ] || [ "${1}" == "" ]; then
        if [ "${verschluesselung}" == "y" ]; then
            mkdir -p ${mountpoint}
            mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/ROOT ${deviceluks} ${mountpoint}

            mkdir -p ${mountpoint}/home
            mkdir -p ${mountpoint}/opt
            mkdir -p ${mountpoint}/var/cache/pacman/pkg
            mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/home ${deviceluks} ${mountpoint}/home
            mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/opt ${deviceluks} ${mountpoint}/opt
            mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/var/cache/pacman/pkg ${deviceluks} ${mountpoint}/var/cache/pacman/pkg

            # custom-mounts
            for wort in ${mountsnaps}
            do
                mkdir -p ${mountpoint}${wort}
                mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current${wort} ${deviceluks} ${mountpoint}${wort}
            done

            mkdir -p ${mountpoint}/var/lib
            mount --bind /mnt/btrfs-root/__current/ROOT/var/lib ${mountpoint}/var/lib
        else
            mkdir -p ${mountpoint}
            mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/ROOT ${device}${rootpartitionnummer} ${mountpoint}

            mkdir -p ${mountpoint}/home
            mkdir -p ${mountpoint}/opt
            mkdir -p ${mountpoint}/var/cache/pacman/pkg
            mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/home ${device}${rootpartitionnummer} ${mountpoint}/home
            mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/opt ${device}${rootpartitionnummer} ${mountpoint}/opt
            mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current/var/cache/pacman/pkg ${device}${rootpartitionnummer} ${mountpoint}/var/cache/pacman/pkg

            # custom-mounts
            for wort in ${mountsnaps}
            do
                mkdir -p ${mountpoint}${wort}
                mount -o defaults,noatime,nodiratime,space_cache,discard,ssd,compress=lzo,subvol=__current${wort} ${device}${rootpartitionnummer} ${mountpoint}${wort}
            done

            mkdir -p ${mountpoint}/var/lib
            mount --bind /mnt/btrfs-root/__current/ROOT/var/lib ${mountpoint}/var/lib
        fi
        # boot mount
        mkdir -p ${mountpoint}/boot
        mount -t vfat ${device}${efipartitionnummer} ${mountpoint}/boot

    fi
}

function subvolume() {

    # Mount
    btrfsmount 1

    # Create
    if [ "${name}" != "noinstall" ]; then
        mkdir -p /mnt/btrfs-root/__snapshot
        mkdir -p /mnt/btrfs-root/__current
        btrfs subvolume create /mnt/btrfs-root/__current/ROOT
        btrfs subvolume create /mnt/btrfs-root/__current/home
        btrfs subvolume create /mnt/btrfs-root/__current/opt
        mkdir -p /mnt/btrfs-root/__current/var/cache/pacman
        btrfs subvolume create /mnt/btrfs-root/__current/var/cache/pacman/pkg/

        # custom-mounts
        for wort in ${mountsnaps}
        do
            mkdir -p /mnt/btrfs-root/__current${wort%/*}
            btrfs subvolume create /mnt/btrfs-root/__current${wort}
        done
    fi

    btrfs subvolume list -p /mnt/btrfs-root

    # Mount
    btrfsmount 2

}

function update() {
    #statements
    local if="${1}"
    local of="${2}"
    local execute="${3}"
    local parameters="${4}"
    if [ -f "${of}" ]
    then
        rm ${of}
    else
        echo "${of} noch nicht vorhanden!"
    fi
    /usr/bin/curl -v -C - -f ${if} > ${of}
    chmod 755 ${of}

    ${of} ${execute} ${parameters}

}

function systemdboot() {
    tobootdeviceuuid=$(blkid -s PARTUUID -o value ${device}${rootpartitionnummer})
    swappartitionpart=$(blkid -s PARTUUID -o value ${device}${swappartitionnummer})

    # zurücksetzen der parameter
    parameter=""

    if [ "${swap}" != "n" ]; then
        parameter="${parameter}resume=PARTUUID=${swappartitionpart} "
    fi
    if [ "${verschluesselung}" == "y" ]; then
        tobootdevice=${deviceluks}
        parameter="${parameter}cryptdevice=PARTUUID=${tobootdeviceuuid}:luks0 "
        if [ "${usbkey}" == "y" ]; then
            parameter="${parameter}cryptkey=UUID=${usbkeyuuid}:${usbkeydateisystem}:/archkey "
        fi
    else
        tobootdevice="PARTUUID=${tobootdeviceuuid}"
    fi
    if [ "${dateisystem}" == "btrfs" ]; then
        parameter="${parameter}rootflags=subvol=__current/ROOT "
    fi

    #rootsub=$(btrfs subvolume list /mnt | awk 'NR<0 && NR>2 {print $2}')

    mkdir -p ${mountpoint}/boot/EFI/systemd/
    mkdir -p ${mountpoint}/boot/EFI/BOOT/
    cp ${mountpoint}/usr/lib/systemd/boot/efi/systemd-bootx64.efi ${mountpoint}/boot/EFI/systemd/systemd-bootx64.efi
    cp ${mountpoint}/usr/lib/systemd/boot/efi/systemd-bootx64.efi ${mountpoint}/boot/EFI/BOOT/BOOTX64.EFI

    mkdir -p ${mountpoint}/boot/loader/entries/
    echo "title    "${repo}"" > ${mountpoint}/boot/loader/entries/arch-uefi.conf
    echo "linux    /vmlinuz-linux" >> ${mountpoint}/boot/loader/entries/arch-uefi.conf
    echo "initrd   /intel-ucode.img" >> ${mountpoint}/boot/loader/entries/arch-uefi.conf
    echo "initrd   /initramfs-linux.img" >> ${mountpoint}/boot/loader/entries/arch-uefi.conf
    echo "options  root=${tobootdevice} rw ${parameter}quiet splash" >> ${mountpoint}/boot/loader/entries/arch-uefi.conf

    echo "title    "${repo}"" > ${mountpoint}/boot/loader/entries/arch-uefi-fallback.conf
    echo "linux    /vmlinuz-linux" >> ${mountpoint}/boot/loader/entries/arch-uefi-fallback.conf
    echo "initrd   /intel-ucode.img" >> ${mountpoint}/boot/loader/entries/arch-uefi-fallback.conf
    echo "initrd   /initramfs-linux-fallback.img" >> ${mountpoint}/boot/loader/entries/arch-uefi-fallback.conf
    echo "options  root=${tobootdevice} rw ${parameter}quiet splash" >> ${mountpoint}/boot/loader/entries/arch-uefi-fallback.conf

    #if [ "${version}" != "libre" ]; then
    #echo "title    "${repo}-lts"" > ${mountpoint}/boot/loader/entries/arch-uefi-lts.conf
    #echo "linux    /vmlinuz-linux-lts" >> ${mountpoint}/boot/loader/entries/arch-uefi-lts.conf
    #echo "initrd   /intel-ucode.img" >> ${mountpoint}/boot/loader/entries/arch-uefi-lts.conf
    #echo "initrd   /initramfs-linux-lts.img" >> ${mountpoint}/boot/loader/entries/arch-uefi-lts.conf
    #echo "options  root=${tobootdevice} rw ${parameter}nvidia-drm.modeset=1 quiet splash" >> ${mountpoint}/boot/loader/entries/arch-uefi-lts.conf

    #echo "title    "${repo}-lts"" > ${mountpoint}/boot/loader/entries/arch-uefi-fallback-lts.conf
    #echo "linux    /vmlinuz-linux-lts" >> ${mountpoint}/boot/loader/entries/arch-uefi-fallback-lts.conf
    #echo "initrd   /intel-ucode.img" >> ${mountpoint}/boot/loader/entries/arch-uefi-fallback-lts.conf
    #echo "initrd   /initramfs-linux-fallback-lts.img" >> ${mountpoint}/boot/loader/entries/arch-uefi-fallback-lts.conf
    #echo "options  root=${tobootdevice} rw ${parameter}nvidia-drm.modeset=1 quiet splash" >> ${mountpoint}/boot/loader/entries/arch-uefi-fallback-lts.conf
    #fi

    echo "default   arch-uefi" > ${mountpoint}/boot/loader/loader.conf
    echo "timeout   1" >> ${mountpoint}/boot/loader/loader.conf

    if [ "${booteintraege}" != "n" ]; then

        echo "Additional boot entries are created !!!"

        arch-chroot ${mountpoint} efibootmgr -c -d ${device} -p 1 -l /EFI/systemd/systemd-bootx64.efi -L "Linux Boot Manager"

        arch-chroot ${mountpoint} efibootmgr -c -d ${device} -p 1 -l \vmlinuz-linux -L "Arch Linux efistub" -u "initrd=/initramfs-linux.img root=${tobootdevice} rw ${parameter}quiet splash"

        #if [ "${version}" != "libre" ]; then
        #arch-chroot ${mountpoint} efibootmgr -c -d ${device} -p 1 -l \vmlinuz-linux-lts -L "Arch Linux efistub" -u "initrd=/initramfs-linux-lts.img root=${tobootdevice} rw ${parameter}nvidia-drm.modeset=1 quiet splash"
        #fi
        # überschreibt die efistub deswegen entfernt
        #arch-chroot ${mountpoint} efibootmgr -c -d ${device} -p 1 -l \vmlinuz-linux -L "Arch Linux fallback efistub" -u "initrd=/initramfs-linux-fallback.img root=${tobootdevice} rw ${parameter}nvidia-drm.modeset=1 quiet splash"

        #arch-chroot ${mountpoint} bootctl install

    fi

}

function abfrage() {

    # Lade Deutsches Tastaturlayout
    loadkeys de

    read -p "What's your name?: " name
    [[ -z "${name}" ]] && name=arch-linux

    # Partionierung
    # UEFI oder Legacy-BIOS
    echo ""
    echo "UEFI = Unified Extensible Firmware Interface"
    echo "Recommended for newer PCs"
    echo "IMPORTANT FOR THIS MUST BE SELECTED IN THE BOAT MENU THE UEFI USB STICK OTHERWISE CAN NOT BE CREATED A UEFI BOAT ENTRY !!!"
    echo ""
    echo "BIOS = basic input/output system"
    echo "Recommended for old PCs and portable USB sticks "
    echo ""
    echo "Please write down the entries: D !!!"
    echo "For each yes you have to make a y and for every no an n, unless it is interpreted differently!!!"
    echo ""
    if mount | grep efi > /dev/null; then
        echo "System supports UEFI"
        read -p "How would you like to have your hard drive partitioned?: [UEFI/bios] " Partition
        [[ -z "${Partition}" ]] && Partition=uefi
    else
        echo "System supports not UEFI"
        read -p "How would you like to have your hard drive partitioned?: [uefi/BIOS] " Partition
        [[ -z "${Partition}" ]] && Partition=bios
    fi

    if [ "${Partition}" == "uefi" ]
    then
        read -p "Should be booted with systemd or with grub? [systemd/GRUB] : " boot
        if [ "${boot}" == "systemd" ]; then
            read -p "Should additional boot entries be created? [Y/n] : " booteintraege
        fi

    fi
    [[ -z "${boot}" ]] && boot=grub

    fdisk -l
    read -p "Specify a hard disk: /dev/sda " device
    [[ -z "${device}" ]] && device=/dev/sda
    if [ "${device}" == "/dev/nvme0n1" ]; then
        m2ssddevice=y
    fi

    #read -p "Which password should the root receive ?: root " pass
    #[[ -z "${pass}" ]] && pass=root

    read -p "Which file system should be used? [BTRFS/ext4] " dateisystem
    [[ -z "${dateisystem}" ]] && dateisystem=btrfs

    if [ "${dateisystem}" == "btrfs" ]; then
        read -p "Should a raid be made ?: [raid0/raid1/raid10/n] " raid
        [[ -z "${raid}" ]] && raid=n
        if [ "${raid}" == "n" ]; then
            echo "No raid is generated!"
        else
            fdisk -l
            read -p "Please enter the disks in a row to be connected to a raid !!!: " device1
        fi
        echo "Standard snapshots / /home /opt /var/cache/pacman/pkg"
        echo "The directories may not overlap otherwise there may be problems with the unmount !!!"
        read -p "Should more snapshots be created ?: " mountsnaps
    fi

    read -p "Do you want to create a swap partition? : [Y/n] " swap
    read -p "Do you want to create a swapfile? : [y/N] " swapfile

    #echo "This attitude can be seen with: "
    #echo "systemctl enable openvpn-client@client.service activate and with"
    #echo "systemctl disable openvpn-client@client.service deactivate"
    #echo "The bandwidth is thereby reduced but the security significantly increased"
    #read -p "Should the connection with a VPN be encrypted? : [Y/n] " openvpn

    if [ "${update}" != "n" ]; then

        echo "WARNING the system is not encrypted !!!"
        echo "WARNING The system will not start without the USB stick !!!"
        read -p "Should a USB stick be installed as the key for the system? : [y/N] " usbsecret
        if [ "${usbsecret}" == "y" ]; then
            read -p "Which USB stick should be selected for the USB-secret key ?: /dev/sdb1 " usbsecretdevice
            [[ -z "${usbsecretdevice}" ]] && device=/dev/sdb1
            usbsecretdeviceuuid=$(blkid -s PARTUUID -o value ${usbsecretdevice})
            [[ -z "${usbsecretdeviceuuid}" ]] && mkfs.ext4 ${usbsecretdevice}
        fi
    fi

    if [ "${raid}" == "n" ]; then
        read -p "Should the hard disk be encrypted? : [y/N] " verschluesselung
        if [ "${verschluesselung}" == "y" ]; then
            modprobe dm-crypt
            read -p "Should an additional USB stick be created for decryption? : [y/N] " usbkey
            if [ "${usbkey}" == "y" ]; then
                read -p "Which USB stick should be selected ?: /dev/sdb1 " usbkeydevice
                [[ -z "${usbkeydevice}" ]] && usbkeydevice=/dev/sdb1
                usbkeydateisystem=$(blkid -s TYPE -o value ${usbkeydevice})
                usbkeyuuid=$(blkid -s UUID -o value ${usbkeydevice})
            fi
        fi
    fi

    # berechnungen

    if [ "${update}" != "n" ]; then
        read -p "Should an offline installation be carried out? : [Y/n] " offline
        if [ "${offline}" != "n" ]
        then
            install="offline"
        else
            install="online"
        fi
    else
        install="offline"
    fi

    if [ "${offline}" != "n" ]; then
        read -p "Do you want to activate the VNC protocol? : [y/N] " x11vnc
        echo "This password is only valid for the current session !!!"
        if [ "${x11vnc}" == "y" ]; then
            x11vnc -storepasswd /etc/x11vnc.pass
            systemctl restart x11vnc.service
        fi
    fi

    # Ausgaben

    # Dateisystem
    if [ "${dateisystem}" == "btrfs" ]; then
        mountpoint="/mnt/btrfs-current"
    elif [ "${dateisystem}" == "ext4" ]; then
        mountpoint="/mnt"
    fi

    #
    echo "Surname: ${name}"
    echo "partition type: ${Partition}"
    echo "Bootloader: ${boot}"
    echo "Drive: ${device}"
    if [ "${raid}" != "n" ]; then
        echo "Raid: ${raid}"
        echo "Hard Drives: ${device1}"
    fi
    echo "File system: ${dateisystem}"
    #echo "System-Partition ${speicher}"
    #if [ "${swap}" != "n" ]; then
    #    echo "Swap-partition ${swapspeicher}"
    #fi
    #if [ "${swapfile}" == "y" ]; then
    #    echo "Swapfile ${swapfilespeicher}"
    #fi
    #echo "Rootpasswort: ${pass}"
    echo "Architektur: $(uname -m)"
    echo "Installation: ${install}"
    if [ "${dateisystem}" == "btrfs" ]; then
        for wort in ${mountsnaps}
        do
            echo "Snapshot ${wort} wird erstellt!!!"
        done
    fi
    #if [ "${openvpn}" != "n" ]; then
    #    echo "VPN-Verschlüsselung: aktiv"
    #fi
    if [ "${usbsecret}" == "y" ]; then
        echo "USB-secret: aktiv"
        echo "USB-UIDD: ${usbsecretdeviceuuid}"
        echo "USB-Label: ${usbsecretdevice}"
    fi
    if [ "${verschluesselung}" == "y" ]; then
        echo "Fesptplatte with Luks 512KB encryption: aktiv"
        if [ "${usbkey}" == "y" ]; then
            echo "${usbkeydevice} is used as key for decrypting: "
            echo "File system: ${usbkeydateisystem}"
        fi
    fi

    # Partitionierung

    if [ "${m2ssddevice}" == "y" ]; then
        m2ssd=p
    fi

    if [ "${dateisystem}" == "btrfs" ]; then
        if [ "${Partition}" == "uefi" ]; then
            bootpartitionnummer=${m2ssd}1
            efipartitionnummer=${m2ssd}2
            if [ "${swap}" != "n" ]; then
                swappartitionnummer=${m2ssd}3
                rootpartitionnummer=${m2ssd}4
            else
                rootpartitionnummer=${m2ssd}3
            fi
        elif [ "${Partition}" == "bios" ]; then
            bootpartitionnummer=${m2ssd}1
            efipartitionnummer=${m2ssd}2
            if [ "${swap}" != "n" ]; then
                swappartitionnummer=${m2ssd}3
                rootpartitionnummer=${m2ssd}4
            else
                rootpartitionnummer=${m2ssd}3
            fi
        fi
    elif [ "${dateisystem}" == "ext4" ]; then
        if [ "${Partition}" == "uefi" ]; then
            bootpartitionnummer=${m2ssd}1
            efipartitionnummer=${m2ssd}2
            if [ "${swap}" != "n" ]; then
                swappartitionnummer=${m2ssd}3
                rootpartitionnummer=${m2ssd}4
            else
                rootpartitionnummer=${m2ssd}3
            fi
        elif [ "${Partition}" == "bios" ]; then
            bootpartitionnummer=${m2ssd}1
            efipartitionnummer=${m2ssd}2
            if [ "${swap}" != "n" ]; then
                swappartitionnummer=${m2ssd}3
                rootpartitionnummer=${m2ssd}4
            else
                rootpartitionnummer=${m2ssd}3
            fi
        fi
    fi

    deviceluks="/dev/mapper/luks0"

    echo "Boot-Partition = ${device}${bootpartitionnummer}"
    echo "EFI-Partition = ${device}${efipartitionnummer}"
    if [ "${swap}" != "n" ]; then
        echo "Swap-Partition = ${device}${swappartitionnummer}"
    fi
    echo "ROOT-Partition = ${device}${rootpartitionnummer}"


    #
    read -p "Are all the details correct ?: [y/N] " sicherheitsabfrage
    if [ "$sicherheitsabfrage" != "y" ]
    then
        echo "ABGEBROCHEN"
        exit 1
    fi
    #    if [ "${update}" != "n" ]; then
    #        echo "Only needed for pure arch-linux systems !!!"
    #        read -p "Are you still installing important packages for the installation? [y/N] " packete
    #        if [ "${packete}" == "y" ]; then
    #            pacman -Syu base base-devel syslinux efibootmgr efitools grub os-prober btrfs-progs \
        #                dosfstools arch-install-scripts xorriso cdrtools squashfs-tools wget dosfstools btrfs-progs \
        #                gdisk dialog bash-completion git iw wireless_tools wpa_supplicant openvpn
    #        fi
    #    fi
    echo "Operating system is installed !!!"
    sleep 5


}









if [ "${1}" != "n" ]
then
    if wget -qO- ipv4.icanhazip.com 1>/dev/null 2>&1; then
        read -p "Should I look at the internet for a new install script and then run it ?: [Y/n] " update
        if [ "${update}" == "debug" ]
        then
            echo "Skip the download a new script !!!"
        else
            if [ "${update}" != "n" ]
            then
                if [ -f /usr/bin/git ]; then
                    echo "Git is installed"
                else
                    echo "Git is not installed"
                    pacman -Syu git --needed --noconfirm
                fi
                gitclone
                /opt/${repo}/arch-install n ${version}
                exit 0
            fi
        fi
    else
        echo "No internet connection detected!"
        update=n
    fi
fi

if [ "${update}" != "n" ]; then
    echo "Online-Modus activated!"
    #vpntunnel
fi
# debug = Installation ueberspringen zu arch-graphical-install und DEBEUG-MODUS
abfrage

secureumount

if [ "${name}" == "debug" ]
then
    echo "DEBEUG-MODUS"
    echo "If no more commands are required, simply press enter"
    echo "Which command should be executed? "

    befehl=blablabla
    while [ "$befehl" != "" ]
    do
        read -p "" befehl
        $befehl
    done

fi

#
echo "A purge stops the chance of installing on the system."
echo "It may take a while!"
if [ "${name}" != "noinstall" ]; then
    dd if=/dev/zero of=${device} bs=64M count=10 status=progress
fi
#
if [ "${Partition}" == "uefi" ]
then
    echo "Partitions with UEFI"

    if [ "${name}" != "noinstall" ]; then
        if [ "${swap}" != "n" ]; then
            echo "Create additional swap partition"
            partionierenmitswap
        else
            partionierenohneswap
        fi
    else
        if [ "${verschluesselung}" == "y" ]; then
            mountencrypt
        fi
    fi

    echo "installation"
    installation
    grubinstall

    if [ "${version}" == "libre" ]; then
        arch-chroot ${mountpoint} mkinitcpio -p linux-libre
    else
        arch-chroot ${mountpoint} mkinitcpio -p linux -c /etc/mkinitcpio.conf
        #arch-chroot ${mountpoint} mkinitcpio -p linux-lts -c /etc/mkinitcpio-lts.conf
    fi
    echo ""
    if [ "${boot}" == "grub" ]
    then
        arch-chroot ${mountpoint} grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id="${repo}" --recheck
        arch-chroot ${mountpoint} grub-mkconfig -o /boot/grub/grub.cfg
    else
        systemdboot
    fi
    #removeinstaller
    echo "Finished"
elif [ "${Partition}" == "bios" ]; then
    echo "Partitions with MBR"
    if [ "${name}" != "noinstall" ]; then
        if [ "${swap}" != "n" ]; then
            echo "Create additional swap partition"
            partionierenmitswap
        else
            partionierenohneswap
        fi
    else
        if [ "${verschluesselung}" == "y" ]; then
            mountencrypt
        fi
    fi

    echo "installation"
    installation
    grubinstall

    if [ "${version}" == "libre" ]; then
        arch-chroot ${mountpoint} mkinitcpio -p linux-libre
    else
        arch-chroot ${mountpoint} mkinitcpio -p linux -c /etc/mkinitcpio.conf
        #arch-chroot ${mountpoint} mkinitcpio -p linux-lts -c /etc/mkinitcpio-lts.conf
    fi
    arch-chroot ${mountpoint} grub-install --target=i386-pc --recheck ${device}
    arch-chroot ${mountpoint} grub-mkconfig -o /boot/grub/grub.cfg
    #removeinstaller
    echo "Finished"
else
    echo "Entry Invalid"
    exit 1
fi

if [ "${x11vnc}" == "y" ]; then
    echo "Please enter a password for the VNC protocol!"
    arch-chroot ${mountpoint} x11vnc -storepasswd /etc/x11vnc.pass
    arch-chroot ${mountpoint} systemctl enable x11vnc.service
else
    arch-chroot ${mountpoint} systemctl disable x11vnc.service
fi

# benutzerwechsel

if [ "${name}" != "noinstall" ]; then
    #usermod -l "${name}" user1
    #usermod -d /home/"${name}" -m "${name}"
    chfn -f "${name}" user1
    passwd "${name}"
fi

if [ "${update}" != "n" ] && [ "${offline}" == "n" ] || [ "${installationfehler}" == "online" ]; then
    read -p "Should the extended installation be carried out? [Y/n] " graphical
    if [ "$graphical" != "n" ]
    then
        cp /opt/${repo}/arch-graphical-install-auto ${mountpoint}/root/arch-graphical-install-auto
        arch-chroot ${mountpoint} /root/arch-graphical-install-auto ${version} "${name}" n archchroot
    fi
fi

echo "df!!!"
df -h
if [ "${dateisystem}" == "btrfs" ]; then
    btrfs filesystem df ${mountpoint}
fi
echo "umount!!!"
sleep 5
secureumount
echo ""
echo "Fertig!!!"
read -p "allation completed successfully. Do you want to RESTART the PC ?: [Y/n] " sicherheitsabfrage
if [ "$sicherheitsabfrage" != "n" ]
then
    echo "restart now"
    reboot
fi
exit 0